AN1-type zinc finger protein 1 - Q8TCF1 (ZFAN1_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

Plays a role in the regulation of cytoplasmic stress granules (SGs) turnover. SGs are dynamic and transient cytoplasmic ribonucleoprotein assemblies important for cellular protein homeostasis when protein production is suspended after acute exogenous stress (PubMed:29804830). Associates with SGs and is involved in the efficient and specific arsenite-induced clearance process of SGs through the recruitment of the ubiquitin-selective ATPase VCP and the 26S proteasome (PubMed:29804830). This process requires both complexes for efficient degradation of damaged ubiquitinated SG proteins during recovery from arsenite stress, and hence avoiding aberrant cytoplasmic SGs degradation via autophagy (PubMed:29804830). UniProt
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Subunit Structure
Associates with the 26S proteasome; this association occurs upon exposure to arsenite and is reduced in the presence of ATP (PubMed:29804830). Interacts (via AN1-type 1 and 2 zinc fingers) with PSMD1; this interaction is increased upon arsenite treatment and occurs in an ATP-independent manner (PubMed:29804830). Interacts with PSMC4 (PubMed:29804830). Interacts with PSMA1 (PubMed:29804830). Interacts (via its ubiquitin-like region) with VCP; this interaction occurs in an arsenite-dependent manner and is necessary for the recruitment of the ubiquitin-selective ATPase VCP to stress granules (SGs) (PubMed:29804830). UniProt
The ubiquitin-like region is necessary for its localization to stress granules (SGs) in a VCP-independent manner (PubMed:29804830). The AN1-type 1 and 2 zinc finger domains are necessary for the recruitment of the 26S proteasome to SGs (PubMed:29804830). Both the AN1-type 1 and 2 zinc finger domains and the ubiquitin-like region are necessary for efficient SGs clearance upon specific arsenite-induced responses (PubMed:29804830). UniProt
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